Jake Guentzel, the left wing on Crosby's line, scored his fifth goal of the series. Including Bryan Rust, Pittsburgh's top line has 20 points (eight goals, 12 assists) in the series, including 17 at even strength (six goals, 11 assists).
New York's top six forwards (Chris Kreider, Mika Zibanejad, Frank Vatrano, Artemi Panarin, Ryan Strome and Copp) have three more points (10 goals, 13 assists), including one fewer at even strength (seven goals, nine assists).
How do they change the result in Game 5?
"I mean, start by playing in their end," Copp said. "When we do break pucks out clean, we're maybe a little too fancy in the neutral zone turning it over or we're not coming back for our 'D' enough. Get in the O-zone and when we can we have to get more bodies to the net and get some shots through. I think we know the recipe here, but it's a matter of going out and executing."
Maybe if they do, they'll challenge Louis Domingue, the Penguins' starting goalie after injuries to Tristan Jarry and Casey DeSmith, enough to dent him.
He faced 24 shots in Game 4 and saved 22.
"Not committed to playing the right way," Gallant said. "We played the right way in New York [in Games 1 and 2], there's no reason we can't play the right way tonight. A lot of soft, bad plays by a lot of people. It was a team effort tonight."
It's certainly alarming that the Rangers appear to have lost their way defensively after spending the better part of the last six weeks of the regular season limiting Grade A scoring chances and shots on goal against.
The Penguins had the backdoor play open all night with a forward skating past a Rangers defenseman to the far post. That's how Guentzel scored at 3:38 of the second period to give Pittsburgh a 3-1 lead 24 seconds after Mike Matheson made it 2-1 on a deflection.
The slot in front of Shesterkin was open for business and the Penguins set up there.
Danton Heinen scored on a netfront deflection of Kris Letang's shot at 18:53 of the second to make it 5-2. Jeff Carter did the same thing 35 seconds later on Jason Zucker's shot to give Pittsburgh a 6-2 lead.
"There wasn't much commitment to playing defense tonight," Gallant said.
And the turnovers got the best of the Rangers too.
Mark Friedman scored at 11:22 of the second to make it 4-1, seven seconds after Jacob Trouba was guilty of a giveaway. Evgeni Malkin scored four seconds after he took the puck away from K'Andre Miller to make it 7-2 at 12:22 of the third period.
"Got to be quick to forget it, learn from it, move on," Trouba said. "It takes four games to win a series. We're not out of this thing. We're going to go home and do what we can to win Game 5."
They'll do it with Shesterkin in net. That it was even a question tells the story of the Rangers right now.